I'm pretty sure that if you have an iOS application with signups and you have a subscription on your website, you have to have subscriptions available in the iO

I'm pretty sure that if you have an iOS application with signups and you have a subscription on your website, you have to have subscriptions available in the iOS app. Microsoft could just do what Dropbox did and allow subscriptions from their app and also allow the same from their website. Dropbox has more flexible options on their website than on their iOS app.